Littelfuse 0218.800VXP Glass Cartridge Fuse 800mA 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The Littelfuse 0218.800VXP is an 800mA 250VAC slow-blow glass cartridge fuse in 5x20mm form factor, requiring a holder for installation. This fuse is designed for circuit protection in AC and DC applications with a breaking capacity of 35A at rated voltage. The part is active in production with 1037 units in stock. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, response characteristics, and approval certifications to ensure direct functional replacement in protected circuits.

Key Parameters

Parameter	Value
Current Rating	800 mA
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Response Time	Slow Blow
Package / Case	5mm x 20mm
Breaking Capacity @ Rated Voltage	35A
Operating Temperature Range	-55°C ~ 125°C
Mounting Type	Requires Holder
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria applied strictly to the provided parameters:

Primary Matching Criteria:

Current Rating: 800 mA (exact match required)
Voltage Rating (AC): 250 V (exact match required)
Package / Case: 5mm x 20mm (exact match required)
Response Time: Slow Blow (exact match required)
Fuse Type: Cartridge, Glass (exact match required)
Operating Temperature Range: -55°C ~ 125°C (exact match required)

Secondary Considerations:

Breaking Capacity @ Rated Voltage: 35A or higher acceptable
Melting I²t: Variation permitted within application tolerance
DC Cold Resistance: Variation permitted within application tolerance
Approval Certifications: Must include at least one common certification (CCC, CE, CSA, UL, VDE, or equivalent)

All substitute parts listed meet the primary matching criteria. Variations in breaking capacity, melting I²t, and DC cold resistance do not disqualify substitution when primary electrical and mechanical parameters align.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Current Rating (mA)	Voltage (VAC)	Response Time	Package	Breaking Capacity (A)	Melting I²t	DC Cold Resistance (Ω)	Inventory (Pcs)
0218.800VXP	Littelfuse Inc.	218	800	250	Slow Blow	5x20mm	35	3.37	0.0813	1037
0213.800MXP	Littelfuse Inc.	213	800	250	Slow Blow	5x20mm	35	9.42	0.1635	1762
0218.800MXP	Littelfuse Inc.	218	800	250	Slow Blow	5x20mm	35	3.37	0.0813	6600
0218.800TXP	Littelfuse Inc.	218	800	250	Slow Blow	5x20mm	35	3.37	0.0813	1088
0219.800MXAP	Littelfuse Inc.	219XA	800	250	Slow Blow	5x20mm	150	9.35	0.1635	6288
0239.800HXP	Littelfuse Inc.	239	800	250	Slow Blow	5x20mm	35	7.565	0.4155	1196
0239.800MXP	Littelfuse Inc.	239	800	250	Slow Blow	5x20mm	35	7.565	0.4155	1408
0034.3116	SCHURTER Inc.	FST 5x20	800	250	Slow Blow	5x20mm	35	3.85	—	6329
0034.5616.11	SCHURTER Inc.	SMD-FST	800	250	Slow Blow	5x20mm	35	3.85	—	1916
0034.5712.11	SCHURTER Inc.	SMD-FTT	800	250	Slow Blow	5x20mm	35	19.6	—	1400
TSC-800MA	OptiFuse	TSC	800	250	Slow Blow	5x20mm	100	1.03	—	3662

Engineering Selection Recommendations

Littelfuse Series 218 (0218.800VXP, 0218.800MXP, 0218.800TXP): These parts share identical electrical characteristics and melting I²t values with the main part. All three carry active product status and include CCC, CE, CSA, UL, and VDE certifications. The 0218.800MXP offers the highest inventory availability at 6600 units.

Littelfuse Series 213 (0213.800MXP): Functionally equivalent with matching current, voltage, and package specifications. Carries BSI, CCC, CE, CSA, SEMKO, UR, and VDE certifications. Higher melting I²t (9.42) and DC cold resistance (0.1635Ω) compared to the main part.

Littelfuse Series 219XA (0219.800MXAP): Meets all primary electrical and mechanical criteria. Breaking capacity is elevated to 150A. Carries CCC, CE, CSA, SEMKO, and UL certifications. Highest inventory availability among Littelfuse options at 6288 units.

Littelfuse Series 239 (0239.800HXP, 0239.800MXP): Both parts meet primary substitution criteria. Carry CE, CSA, KC, and UL certifications. Higher DC cold resistance (0.4155Ω) and melting I²t (7.565) compared to the main part.

SCHURTER FST 5x20 (0034.3116): Cross-manufacturer equivalent from SCHURTER Inc. Carries CCC, cURus, and VDE certifications. Melting I²t of 3.85 is comparable to the main part. Highest inventory among SCHURTER options at 6329 units.

SCHURTER SMD Series (0034.5616.11, 0034.5712.11): Both meet primary electrical and mechanical criteria. Carry cURus and/or VDE certifications. The 0034.5712.11 has significantly higher melting I²t (19.6) indicating slower response.

OptiFuse TSC-800MA: Cross-manufacturer option with elevated breaking capacity of 100A. Carries cULus and UL 248 certifications. Lowest melting I²t value (1.03) indicates fastest response among all listed substitutes.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 0218.800VXP with any of the listed parts?

A: Yes, all listed parts meet the primary substitution criteria: 800mA current rating, 250VAC voltage rating, 5x20mm package, slow-blow response, and glass cartridge type. Physical installation and electrical performance remain compatible within the specified operating temperature range of -55°C to 125°C.

Q: What is the difference between the Littelfuse 218 and 213 series?

A: Both series meet identical electrical specifications for this 800mA 250VAC application. The primary difference is melting I²t: Series 218 has 3.37 while Series 213 has 9.42, indicating different thermal response characteristics. Series 213 also carries additional certifications including BSI and UR.

Q: Why does the 0219.800MXAP have a breaking capacity of 150A instead of 35A?

A: The 0219.800MXAP is from the Series 219XA line, which is designed for higher fault current environments. The elevated breaking capacity does not affect substitution eligibility for the 0218.800VXP application, as it remains compatible with all primary electrical and mechanical parameters.

Q: Are SCHURTER and OptiFuse parts direct replacements?

A: Yes. SCHURTER (0034.3116, 0034.5616.11, 0034.5712.11) and OptiFuse (TSC-800MA) parts meet all primary matching criteria and carry recognized safety certifications. They are mechanically and electrically compatible with the Littelfuse 0218.800VXP in 5x20mm holder applications.

Q: What does "Slow Blow" response time mean?

A: Slow-blow fuses tolerate temporary current surges without opening, responding only to sustained overcurrent conditions. All listed substitutes share this characteristic, ensuring consistent circuit protection behavior across manufacturer options.

Q: Does the DC cold resistance variation affect substitution?

A: DC cold resistance variations among the listed parts (ranging from 0.0813Ω to 0.4155Ω) do not disqualify substitution. These differences reflect design variations between manufacturers and series but remain within acceptable parameters for 800mA 250VAC cartridge fuse applications.

Q: Which substitute has the best inventory availability?

A: The Littelfuse 0218.800MXP (Series 218) offers the highest inventory at 6600 units, followed by the Littelfuse 0219.800MXAP (Series 219XA) at 6288 units and SCHURTER 0034.3116 at 6329 units.

Q: Are all listed parts RoHS3 compliant?

A: Yes, all substitute parts listed carry RoHS3 compliance status, meeting environmental and material restriction requirements for electronic component applications.

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